ATC-2

About the ATC-2

The Air Tight ATC-2 is a stereo line-control tube preamplifier designed for peerless fidelity with full emotional impact. It features a self-biased 2-stage NF flat amplifier for high gain and resolution, an SRPP output stage for high power under low impedance, and six independent constant voltage circuits for stable, low-bass reproduction. The unit uses custom-selected coupling capacitors to ensure natural sound free from intermodulation distortion. It is built on a single-steel chassis coated with multiple enamel layers for superb rigidity and noise reduction. The ATC-2 is hand wired point-to-point without printed circuit boards, maintaining the purest signal path possible. It includes abundant inputs and outputs for versatile use and optionally can be upgraded with an "Alps" high-precision volume potentiometer (RK-501). The tube complement includes 1x 12AX7 (ECC83), 2x 12AU7 (ECC82), and 1x 6X4 rectifier tube. The preamplifier has been discontinued due to parts availability after over 30 years of production but remains highly regarded for its sound quality and build.